Antislipping device for stands and the like



' 1,679,461 R. WORSCHING MITISLIPPING DEVICE FOR STANDS AND THE LIKE QFiled Nay 1'7, 192'! fin 67220.1".-

Patented Aug. 7, 1928.

' UNITED STATES PATENT OFFICE;

Brennan won s ciame, or smmvnnao, enamnivrg AnTIsLIPPING DEVICE FORsrnivnsfnlvn THE LIKE. A

Application filed May 17, 1927, Serial No. 191,972, and in Germany April25, 19 27.

This invention relates to a device designed to prevent slipping ofstands, for instance for photographic-apparatus, surveying instrumentsand the like, and which may be used also for musical instruments. It hasbecome known to provide for each leg of a stand a removable cup-shapedshoe, comprising a rough lower surface, said shoe gripping over thepoint of the leg and preventing slipping of the leg. Theanti-slipping-devices which are commonly used comprise a ball-jointcarrier for the shoe and designed to be screwed into the leg of thestand so that not only the cost of manufacturing of the stand isincreased but the other inconvenience caused that time is required forputting on and removing the antislipping shoe and the points of the legsof the stand. Ball-joint-carriers which are not collapsible require muchspace so that they are diflicult to transport. The adjusting of the legsof the stand in an inclined position is limited owing to theball-joints.

This invention relates to an anti-slipping device for the legs ofstands, which avoids the above stated inconveniences.

According to the invention the cupshaped shoe has an aperture designedto receive the end of the corresponding leg of the stand so that thisleg can be inclined at will and it has a removable holding device forconnecting the shoe with the leg and consisting of a clamping spring onthe upper side of the cup-shaped shoe.

An anti-slipping device according to the invention is shown, by way ofexample, in the accompanying drawing.

Fig. 1 is a cross section on line A--B of Fig. 2.

Fig. 2 is a top'plan view.

Fig. 3 shows in perspective view an antislipping device with an inclinedleg of the stand inserted in the device.

The cup-shaped foot support a, the lower edge of which is designed torest upon the floor, has on its outer side a friction-ring gextendinground the lower edge and held by a mounting h. The cup-shapedsupport a has a concavity k in its upper surface and a central bore bfor the point i of the leg m of the stand. The bore 6 is comparativelynarrow so that only a portion of point z projects over the lower surfaceof the cup a.

The removable connection of the cupshaped-support a with the point z ofthe leg of the stand is arranged on the upper side of the support a; andconsists of a two-armed clamping spring Z, the arms of which crossextreme ends p form handles projecting over the rim of the cup-shapedsupport'a, the bent portions 0 bearing against the cavity 70 of the cup.

To clamp a leg the handles 2 of the clamping spring are pressed the onetowards the other so that the arms open sufiiciently to permit ofinserting point i of the leg m. When the handles ;0 are released, thearms of the clamping spring clamp the leg m on two opposite points andbear onto the collar n above point i. In this manner a secureconnection, independent of the shape of point z', is obtained betweenthe two elements. When the leg m of the stand is inclined, the arms ofthe clamping-spring yleld, as shown in Figs. 3 in continuing however tosecurely hold the leg m and collar n, so that the connection betweensupport and leg is ensured in any inclined position of said leg.

The improved anti-slipping device according to the invention, admits ofan inclination of the leg which up to the present could not be obtained.

Instead of the bore 6 a semi-spherical cavity in the bottom of thecavity is might be provided to serve as bearing for point i of the leg.The clamping spring might be of another shape than shown, for instancemight the two arms be fixed to opposite points of the rim of thecup-shaped support.

I claim 1. An anti-slipping attachment for the feet of tripod legs andthe like comprising a socket member having a concaved wall provided withan opening therein, and fastening means consisting of a pair of springclamping members each secured at one end to the socket member and havinga free end having an operating handle, the intermediate portions of saidclamping mem bers being bent in reverse directions and having clampingportions overlying said opening and adapted to grip the leg between,said clamping portions being relatively movable by means of saidoperating handles and adapted to permit yielding universal movement ofthe clamped leg.

2. An anti-slipping attachment for the feet of tripod legs and the likecomprising posite directions and providing clamping a member having anopening to receive the portions to engage the end of the leg and topoint of the end of the leg, and a pair of permit yielding movementthereof in all 10 spring clamps each secured at one end to directionsradially of said member.

5 said member and having a manipulht ing In testimony whereof I aflix mysignature.

handle at its opposite end, the intermediate portions of the clampsbeing offset in op- RICHARD VVORSCHING.

